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The DDSS007-FR is a 5 inch stainless steel fire-rated door hinge designed for commercial openings that require a taller hinge format with narrow leaf-width options and four-bearing support. It is available in 5 × 3, 5 × 3.5 and 5 × 4 inch configurations, all with a consistent 3.0 mm leaf thickness. Its five-knuckle barrel incorporates four ball bearings to distribute movement across additional bearing points, while the three open widths support coordination with different door edges, frame profiles and reinforcement preparations. Square-corner leaves, zig-zag symmetrical template holes and stainless steel screws support controlled installation. The hinge is UL and cUL Listed to UL 10C for fire ratings up to 3 hours under File R38013, with NRP, RP and security-stud options available for project-specific security and maintenance requirements.
· 5-inch hinge height with 3, 3.5 and 4-inch open-width choices.
· All three catalog articles use a consistent 3.0 mm leaf thickness.
· Four ball bearings distribute barrel movement across additional bearing points.
· Five-knuckle, non-handed construction suits compatible left- or right-hand openings.
· UL/cUL Listed and UL 10C fire rated for up to 3 hours under File R38013.
· Square-corner leaves support coordinated full mortise preparation.
· Zig-zag symmetrical template holes suit compatible wood or hollow metal doors and frames.
· Stainless steel construction is available in multiple grades and architectural finishes.
· NRP, RP and security-stud options coordinate pin security with the opening.
|
Specification |
Available Configuration |
|
Model |
DDSS007-FR |
|
Installation |
Full mortise; square corner; standard weight template hinge |
|
Barrel Construction |
Five knuckles with four ball bearings (4BB) |
|
Screw-Hole Layout |
Zig-zag symmetrical template locations for compatible wood or hollow metal doors and frames |
|
Manufacturing Standard |
Manufactured in accordance with ANSI/BHMA A156.1 |
|
Dimension Standard |
Dimensions and tolerances conform to ANSI/BHMA A156.7 |
|
Handing |
Non-handed |
|
Material Options |
SUS201, SUS304 and SUS316 stainless steel |
|
Finish Options |
SSS, PSS, AB, AC and PVD |
|
Pin Options |
Non-removable pin (NRP), removable pin (RP), security stud (SS) |
|
Fasteners |
Stainless steel screws supplied |
|
Fire Listing |
UL/cUL Listed; UL 10C; up to 3 hours; File R38013 |
|
Hinge Size (H × W) |
Leaf Thickness |
Catalog Article Number |
|
5 × 3 in |
3.0 mm |
DD-SS-5x3x3mm-4BB |
|
5 × 3.5 in |
3.0 mm |
DD-SS-5x3.5x3.0mm-4BB |
|
5 × 4 in |
3.0 mm |
DD-SS-5x4x3.0mm-4BB |
All DDSS007-FR articles share a 5-inch height and 3.0 mm leaf thickness, so the principal dimensional choice is the open width. The 3, 3.5 and 4-inch versions position the barrel differently in relation to the door and frame faces. Select the complete article number from the approved door-edge and frame-section drawings rather than assuming that the narrowest or widest leaf will suit every opening. Mortise depth, reinforcement and template locations must remain coordinated with the selected width.
The five-knuckle barrel incorporates four ball bearings, providing more bearing points than the two-bearing version in the same general size range. This structure supports smooth rotational movement and distributes operating friction through the barrel. Bearing quantity alone is not a door-weight rating. Door dimensions, approximate mass, closer force, operating frequency, hinge quantity and spacing, reinforcement, fastener engagement and the requirements of the listed assembly must be reviewed together before specification.
Zig-zag symmetrical screw-hole locations are intended for compatible wood or hollow metal doors and frames. Confirm the current factory drawing, square-corner mortise, reinforcement and stainless steel screw engagement before machining. Select NRP when pin removal must be restricted, RP when service removal is acceptable, or a security stud when additional hinge-side engagement is specified. Record the complete article and pin option against each door mark to avoid site substitution.
The UL 10C listing and fire rating up to 3 hours under File R38013 apply within the approved conditions of use. Compliance also depends on the labeled door and frame, hinge quantity and spacing, reinforcement, fasteners, latch, closer, seals, clearances and installation requirements. A four-bearing hinge does not independently increase the opening's fire rating or establish a universal load capacity. Project documents and the applicable listing remain controlling.
· Exact 5 × 3, 5 × 3.5 or 5 × 4-inch catalog article number
· Door size, approximate weight, closer model, hinge quantity and spacing
· Door and frame material, section drawing, reinforcement and mortise details
· Confirmation of the 3.0 mm leaf and four-ball-bearing configuration
· Required stainless steel grade, finish and approved control sample
· NRP, RP or security-stud option, fire documentation, quantity and destination
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Main Product:
door hinges,
door locks,
panic exit device,
door closers,
door handles,
door hardware
